CN101041528A - Treatment technique for 'calcium carbide acetylene method PVC production wastewater' by aeration flocculation process - Google Patents
Treatment technique for 'calcium carbide acetylene method PVC production wastewater' by aeration flocculation process Download PDFInfo
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- CN101041528A CN101041528A CNA2007100776972A CN200710077697A CN101041528A CN 101041528 A CN101041528 A CN 101041528A CN A2007100776972 A CNA2007100776972 A CN A2007100776972A CN 200710077697 A CN200710077697 A CN 200710077697A CN 101041528 A CN101041528 A CN 101041528A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses an aeration flocculate method to dispose craft belonging to calcium carbide acetylene method PVC waste water disposing method, which comprises the following steps: leading carbide slag area supernatant fluid and PVC waste water coming from each producing department to balancing reservoir, aeration tank, preformed precipitate tank, balancing tank, elevator pump, mixer, neutralizing aeration room, reacting room, two depositing tanks, filtering tank, activated char absorber and monitor tank; getting into clear water tank; providing to user by recycling pump. This invention remove sulfide, COD and other matter completely; which realize automatic remove sludge and rewash with simple craft and low cost.
Description
Technical field: the present invention relates to adopt carbide acetylene method production method of wastewater treatment that PVC produced, particularly a kind of aeration flocculence is handled " calcium carbide acetylene method PVC production wastewater " treatment process.
Background technology: according to domestic report, existing technology is divided into four kinds of forms substantially:
1. natural sedimentation method: be about to calcium carbide waste water and send into horizontal sedimentation tank, through supernatant liquor reuse after the natural subsidence.Be used to make cement etc. after the carbide slag mummification, other concentrated water drainage is gone into drying bed.Being characterized in handling not thorough, not meeting environmental requirement, is primary method.
2. chemical wadding flocculence: adopt ferrous sulfate to make precipitation agent, the sulfide precipitation that makes sulfonium ion transform into indissoluble is removed.
Reaction formula is as FeSO
4+ S → FeS ↓+SO
4SO
4+ Ca → CaSO
4
2.1 advantage:
1) to sulphur and COD clearance height, desulfurization degree reaches 99%, reaches 92% except that COD leads;
2) treatment facility is simple, as long as coagulating sedimentation adds filtering basin.Discharge of noxious gases not;
3) ferrous sulfate has played chemical combination and flocculation two effect greatly.
2.2 shortcoming:
1) ferrous dosage is too big, running cost is high: ferrous dosage is 9～11 times of sulphur content, causes administration apparatus big;
2) sludge quantity is big, processing cost is too high: the material that is removed in 99% the ferrous and water all gets off as mud is precipitated, sludge quantity than the raw wastewater height more than ten times, make mud storage, anhydration system and coagulant aids system all very huge, the sludge treatment cost is too high;
3) above-mentioned reason causes labor capacity and traffic capacity too big;
4) settling apparatus is big, the coagulant aids consumption is many: light because compound particle is thin, and strong with electrical charge rejection power, form the ultra artificially, so need the coagulant aids polyacrylamide many.Loose and the free settling not of the flocs unit of forming is so need settled at a slow speed big settling tank.
3. catalytic oxidation: utilize the effect of airborne oxidation and catalyzer or oxygenant etc. that sulfonium ion is oxidized to thiosulphate, vitriol etc.Catalyzer commonly used has quinones, metallic salts such as manganese, copper, iron, cobalt, gac, superoxide etc.When making catalyzer with manganous sulfate, Mn
2+Ion can promote airborne oxygen to S
2-Ionic oxide formation generates elemental sulfur, and then is oxidized to thiosulphate or vitriol.
Mn
2++2OH
-＝Mn(OH)
2 2Mn(OH)
2+O
2＝2H
2MnO
3
2S
2-+4H
2MnO
3+H
2O＝S
2O
3 2-+4Mn(OH)
2+OH
-
4S
2O
3 2-+5O
2+4H
-＝6SO
4 2-+2S+2H
2O
3.1 advantage:
Under catalyzer existence or employing strong oxidizer condition, S
2-The ion transformation efficiency is very high.
3.2 shortcoming:
1) a large amount of S
2O
3 2-Existence cause redox potential in the waste water (ORP) at-1000mv to the-250mv, aerobe can't be survived.
2) the extremely difficult sedimentation of the oxyhydroxide of elemental sulfur and manganese not only will have coagulant aids, and the large volume settling tank that adapts to overcast reduction of speed degree will be arranged.
3) owing to the waste water complicated component, the foreign matter content fluctuation is big, causes effect of settling poor, influences effluent quality.
4, absorption method: in waste water, add the hydrochloric acid neutralization, with S
2+Be combined to H
2S, aeration can be with 64～95% H under PH=6～7 conditions
2S overflows water.H
2S is a toxic gas, and available 3% sodium hydroxide solution adds ferric oxide and absorbs H
2S and SO
2Generate He
2S
3, reaction formula is as follows:
2HCL+S
2-＝H
2S+2CL
- 2Fe
2S
3+6H
2S＝2Fe
2S
3+6H
2O
2Fe
2S
3+3SO
2＝2Fe
2S
3+6O
2 2Fe
2S
3+3O
2＝2Fe
2S
3+6S↓
From reaction formula, as can be known, after through reaction, produced Fe
2S
3And elemental sulfur.So can repeatedly recycle.Elemental sulfur is sold as byproduct after purifying by acetone.
4.1 advantage:
1) joining solution can reuse repeatedly;
2) the elemental sulfur sale of can purifying;
3) running cost is relatively low.
4.2 shortcoming:
1) hydrogen sulfide is not only poisonous, the concentration height can the blast;
2) treatment technology is comparatively complicated.
More than introduce except that natural sedimentation, rest on mostly in the laboratory, the report of practical application success is few.
Summary of the invention: the object of the present invention is to provide a kind of aeration flocculence to handle " calcium carbide acetylene method PVC production wastewater " treatment process, can make PVC wastewater treatment qualified discharge or reuse, expellant gas is purified, sludge volume is few, the level of automation height, it is with the accident water treatment, equalizing tank, the monitoring pond, the reuse clean water basin, in and aeration, coagulating sedimentation, the filtering integral water purifying plant, air-purification system, administration system, sludge drying system, the set technique of lifting system at different levels and automation control system combines, thereby reach stable effluent quality, sludge volume is few, running cost is low, the automatization level height, reduce mishandle, alleviate the purpose of physical labor intensity and hygienic safety operation.
Formation of the present utility model: utilize neutralization, multistage aeration, precipitation, filter, charcoal absorption and purifying air and the physico-chemical processes of sludge treatment are tied the complete process for treating of platform mutually, by pretreatment stage, the second-stage treatment stage, the advanced treatment stage, security measures and reuse facility five parts are formed, 1. pretreatment stage: the PVC waste water that carbide slag field supernatant liquor and each production unit are sent here flows in the balancing reservoirs 1 by sewage water inlet pipe 55, stir through diving mixer 42, after flowing into solarization air cell's 2 aerations and removing the oxidable thing of ammonia nitrogen or catalysis hypochlorite oxidation, from flowing into the preliminary sedimentation tank 3 heavy suspended substances that go, flow into equalizing tank 4, stir by diving mixer 43; 2. second-stage treatment stage: pretreated water is sent into line mixer 6 by the suction and the rising pipe 56 of lift pump through lift pumps 5 from equalizing tank 4, with volume pump 35 by neutralizing agent add the pipe 70 neutralizing agents of sending here mixes the neutralization after enter in solarization air cell 7, the air of sending here by high pressure positive blower blast tube 76 with high pressure positive blower 31 stirs and oxidation, in and solarization air cell's back segment add by coagulation with coagulating agent volume pump 40 and manage 72 dosing coagulants, enter reaction chamber 8 then and carry out flocculation reaction, form the flocs unit inflow two heavy chambers 9 heavy suspended substances, clear water of going and enter filtration chamber's 10 filtrations; 3. advanced treatment stage: water enters active carbon adsorber 11 by filtration chamber's rising pipe 57 and 58 gravity flows of active carbon adsorber water inlet pipe after the filter of filtration chamber, and remaining material is fallen in absorption after active carbon adsorber rising pipe 61 flows into monitoring ponds 12; 4. security measures: establish COD on-line monitoring instrument in the monitoring pond, discharging or flow into clean water basin 13 reuses during the test water quality reaching standard can be sent balancing reservoir 1 or accident pool 16 back to by suction of monitoring pump and rising pipe 83 with monitoring pump 15 when not up to standard and be participated in again and handle; 5. reuse facility: qualified water is sent into user's reuse by the suction of reuse pump with rising pipe 65 through reuse pump 14.
Accident waste water, first rainwater and fire-fighting wastewater treatment: 1. accident waste water enters accident pool 16 storages by accident pool water inlet pipe 66, and stirs with diving mixer 45, sends into balancing reservoir 1 with accident pump 17 by suction of accident pump and rising pipe 67 and handles; 2. first rainwater and fire-fighting waste water: they flow through frame trough 18 from rainwater and fire-water pond water inlet pipe 68, fall the bulk suspended substance by mechanical grille 19 interceptions, enter just rainwater and fire-water pond 20, send into balancing reservoir 1 with the equal permanent water yield by suction of rainwater pump and rising pipe 69 through rainwater pump 21 again and handle.
Aerating system: the air that aeration is used by high pressure positive blower 31 in high pressure positive blower blast tube 76 is sent into aeration tank 2 respectively aerating system 32 and in and aerating system 33 in the solarization air cell 7 carry out aerations.
Air-purification system, 1. purifying air: in and aeration in waste gas under the suction of induced draft fan 25, flow into air purifier 23 through gas skirt 22 and obnoxious flavour output tube 73, with the soup of recycle pump 27 from reaction tank 24 extractions, through recycle pump suction and rising pipe 75 send into that air purifier 23 internal sprayings mix and chemical combination after enter reaction tank 24 again and carry out secondary impact water bath platform after, with objectionable impurities chemical combination is that precipitable thing is stayed in the reaction solution, and uncontaminated air is sent into chimney 26 through induced draft fan 25 by induced draft fan air draught and exhaust duct 74 and discharged; 2. dispensing and liquid level control: establish dispensing kit 28 at reaction tank 24, its nowel is that spill box is collected unnecessary soup in the reaction tank, and case is full after reflux pump 29 is sent the molten medicine-chest reuse of the top box of dispensing kit 28 back to; 3. spoil disposal: when accumulating the too many or liquid content of dispersion of mud in the reaction tank 24 very little the time, open mud valve 30 spoil disposals, institute's blowdown mud through reaction tank shore pipe 79 from flowing into sludge sump 50.
Sludge treatment, 1. preliminary sedimentation tank mud: preliminary sedimentation tank 3 sedimentary mud pick up and send into mud drainage slot 49 by spoil disposal purlin car 48 by inhaling mud purlin car suction mud and shore pipe 77, flow into sludge sump 50 certainly through shore pipe 80 again; 2. two heavy chamber mud: sedimentary mud are discharged from shore pipe 78 by two heavy chamber automatic mud removing valves 47 in the two heavy chambers 9, flow into sludge sump 50 certainly; 3. sludge drying is handled: the supernatant liquor in the sludge sump 50 is discharged from sludge sump upflow tube and water extracter water shoot 82 by automatically controlled reverse flow valve 54, send into balancing reservoir 1 and participate in processing again, mud promotes the back by sludge pump 51 and inhales in mud and the dredging tube 81 to add from PAM with PAM volume pump 37 at sludge pump and manage after 71 PAM that send here mix, send into centrifugal dewatering of sludge machine 52 and carry out drying and other treatment, dried mud is from 53 outputs of mud travelling belt, and waste water flows back to balancing reservoir 1 through sludge sump upflow tube and water extracter water shoot 82.
Administration system, 1. neutralizing agent: add pipe 70 by volume pump 35 through neutralizing agent from neutralizing agent case 34 at the used neutralizing agent of neutralization stage and send into line mixer 6, its dosage is by the PH on-line monitoring instrument control that is located at the mixing tank front and back; 2. two heavy chamber flocculation agents: by the nowel storage medicine-chest sucking-off of coagulating agent volume pump 40 from coagulant administration case 39, in coagulant dosage pipe 72 is delivered to and the rear portion aeration of solarization air cell 7 mix; 3. sludge treatment flocculation agent: by the nowel storage medicine-chest sucking-off of PAM volume pump 37 from PAM dispensing kit 36; Adding pipe 71 through PAM delivers to the sludge pumps of sludge pump 51 and inhales mud and mix with dredging tube 81.
Backwash water is handled, 1. filtration chamber's backwash water: filtration chamber 10 is reaching when filling perhaps head final period, and the flush discharge valve on filtration chamber's backwash rising pipe 60 enters backwash main discharge pipe 64 automatically, flows back to balancing reservoir 1 certainly; 2. active carbon adsorber backwash water: when needs wash, its backwash is sent into adsorber with clear water from the electric control valve of water storage tank on active carbon adsorber backwash water inlet pipe 62 of filtration chamber 10, and backwash waste enters backwash main discharge pipe 64 from active carbon adsorber backwash rising pipe 63.
Robot control system(RCS), 1. main line automatic control: liquid level sensor is installed in equalizing tank 4, top water-level and lowest water level instruction lift pump 5 are opened, are stopped in the control pond, control panel, valve and the time relay in all water technologies of lift pump 5 back is all chain with lift pump, and follow procedure moves with lift pump; 2. all establish liquid level sensor in accident pool, stormwater tank, sewage lagoon and the clean water basin, just instruct separately lift pump and the automatic start-stop of follow-up equipment by the pond median water level; 3. guard pump: when the water-quality guideline of the on-line monitoring instrument in being located at the monitoring pond was defective, instruction started operation, termination of pumping when qualified; 4. automatic chemical dosing case: PAM dispensing kit 36 and coagulant administration case 39 are divided into top box (molten medicine-chest) and nowel (storage medicine-chest), in nowel, establish liquid level sensor, instruction automatic infusion valve 38 or 41 is opened when nowel lacks medicine, the standby soup of top box is dropped into nowel automatically, and warning allows the operations staff come molten medicine; 5. mechanical grille: mechanical grille 19 is opened automatically, is stopped by water level height before the grid; 6. diving mixer: open automatically, stop by setting-up time; 7. each ECU and security system are all imported master control room and are controlled by the PLC system.
Compared with the prior art, advantage of the present invention is as follows:
1. there is a whole set of adapt to adopt carbide acetylene method production wastewater treatment method that PVC produced, and can be different different with the wastewater property that is produced and suitably increase and decrease the wastewater treatment operation according to each production technique.
2. it is more thorough to remove sulfides from wastewater, COD and other material, can make treating water be back to production, reaches zero release, and sludge volume is few.
3. polluted water such as accident, fire-fighting and first rainwater are also handled.
4. issuable obnoxious flavour in handling has been carried out purifying treatment, the protection atmosphere is not contaminated.
5. the total system lift pump is few, and no flushing pump is gravity flow substantially between each unit, and has realized automatic mud removing and automatic backwash.
6. technical process is fairly simple, and construction investment is low, automatic operating, and management is simple with maintenance.
Description of drawings: Fig. 1 is a structural representation of the present invention, and Fig. 2 is a process flow sheet.
1. balancing reservoirs among the figure, 2. aeration tank, 3. preliminary sedimentation tank, 4. equalizing tank, 5. lift pump, 6. line mixer, 7. in and solarization air cell, 8. reaction chamber, 9. two heavy chamber, 10. filtration chambers, 11. active carbon adsorber, 12. the monitoring pond, 13. clean water basin, 14. reuse pumps, 15. monitoring pump, 16. accident pool, 17. accident pumps, 18. frame troughs, 19. mechanical grille, 20. first rainwater and fire-water pond, 21. rainwater pumps, 22. gas skirts, 23. air purifier, 24. reaction tank, 25. induced draft fans, 26. chimneys, 27. recycle pump, 28. dispensing kit, 29. reflux pumps, 30. mud valves, 31. high pressure positive blower, 32. aerating system, in 33. and the aerating system of aeration tank, 34. neutralizing agent casees, 35. volume pump, 36.PAM dispensing kit, 37.PAM volume pump, 38. automatic infusion valves, 39. coagulant administration case, 40. the coagulating agent volume pump, 41. automatic infusion valves, 42. diving mixers, 43. diving mixer, 44. diving mixer, 45. diving mixers, 46. first stormwater tank diving mixers, 47. two heavy chamber automatic mud removing valves, 48. spoil disposal purlin car, 49. mud drainage slots, 50. sludge sumps, 51. sludge pump, 52. the centrifugal dewatering of sludge machine, 53. mud travelling belts, 54. automatically controlled reverse flow valves, 55. sewage water inlet pipe, 56. lift pump suction and rising pipe, 57. filtration chamber's rising pipes, 58. active carbon adsorber rising pipes, 59. filtration chamber's bypass rising pipe, 60. filtration chamber's backwash rising pipe, 61. active carbon adsorber rising pipes, 62. active carbon adsorber backwash water inlet pipes, 63. active carbon adsorber backwash rising pipe, 64. the backwash main discharge pipe, suction of 65. reuse pumps and rising pipe, 66. accident pool water inlet pipes, 67. suction of accident pump and rising pipe, 68. first rainwater and fire-water pond water inlet pipe, suction of 69. rainwater pumps and rising pipe, 70. neutralizing agents add pipe, 71.PAM add pipe, 72. the coagulant dosage pipe, 73. obnoxious flavour output tubes, 74. induced draft fan air draught and exhaust ducts, 75. recycle pump suction and rising pipe, 76. the high pressure positive blower blast tube, 77. inhale mud purlin car inhales mud and shore pipe, 78. shore pipes, 79. reaction tank shore pipe, 80. shore pipe, 81. sludge pumps are inhaled mud and dredging tube, 82. sludge sump upflow tubes and water extracter water shoot, 83. suction of monitoring pump and rising pipe, 84. tap water supply pipes.
Embodiment: as Fig. 1, shown in Figure 2, utilize neutralization, multistage aeration, precipitation, filter, the complete process for treating that charcoal absorption and purifying air combine with the physico-chemical processes of sludge treatment, by pretreatment stage, the second-stage treatment stage, the advanced treatment stage, security measures and reuse facility five parts are formed, 1. pretreatment stage: the PVC waste water that carbide slag field supernatant liquor and each production unit are sent here flows in the balancing reservoirs 1 by sewage water inlet pipe 55, stir through diving mixer 42, from flowing into solarization air cell 2 after aerating system 32 aerations are removed the oxidable thing of ammonia nitrogen or catalysis hypochlorite oxidation, from flowing into the preliminary sedimentation tank 3 heavy suspended substances that go, flow into equalizing tank 4, stir by diving mixer 43; 2. second-stage treatment stage: pretreated water is sent into line mixer 6 by lift pump suction and rising pipe 56 through lift pumps 5 from equalizing tank 4, with volume pump 35 by neutralizing agent add the pipe 70 neutralizing agents of sending here mixes the neutralization after enter in solarization air cell 7, the air of sending here by high pressure positive blower blast tube 76 with high pressure positive blower 31 stirs and oxidation, in and solarization air cell's back segment add by coagulation with coagulating agent volume pump 40 and manage 72 dosing coagulants, enter reaction chamber 8 then and carry out flocculation reaction, form the flocs unit inflow two heavy chambers 9 heavy suspended substances, clear water of going and enter filtration chamber's 10 filtrations; 3. advanced treatment stage: water enters active carbon adsorber 11 by filtration chamber's rising pipe 57 and 58 gravity flows of active carbon adsorber water inlet pipe after the filter of filtration chamber, remaining material is fallen in absorption after active carbon adsorber rising pipe 61 flows into monitoring pond 12, in the monitoring pond diving mixer 44 is arranged; 4. security measures: establish COD on-line monitoring instrument in the monitoring pond, discharging or flow into clean water basin 13 reuses during the test water quality reaching standard can be sent balancing reservoir 1 or accident pool 16 back to by suction of monitoring pump and rising pipe 83 with monitoring pump 15 when not up to standard and be participated in again and handle; 5. reuse facility: qualified water is sent into user's reuse by the suction of reuse pump with rising pipe 65 through reuse pump 14.
Accident waste water is rainwater and fire-fighting wastewater treatment just: 1. accident waste water enters accident pool 16 storages by accident pool water inlet pipe 66, and stirs with diving mixer 45, sends into balancing reservoir 1 with accident pump 17 by suction of accident pump and rising pipe 67 and handles; 2. first rainwater and fire-fighting waste water: they flow through frame trough 18 from first rainwater and fire-water pond water inlet pipe 68, fall the bulk suspended substance by mechanical grille 19 interceptions, enter just rainwater and fire-water pond 20, by the stirring of first stormwater tank diving mixer, send into balancing reservoir 1 with the equal permanent water yield by suction of rainwater pump and rising pipe 69 through rainwater pump 21 again and handle.
Aerating system: the air that aeration is used by high pressure positive blower 31 in high pressure positive blower blast tube 76 is sent into aeration tank 2 respectively aerating system 32 and in and aerating system 33 in the solarization air cell 7 carry out aerations.
Air-purification system, 1. purifying air: in and aeration in waste gas under the suction of induced draft fan 25, flow into air purifier 23 through gas skirt 22 and obnoxious flavour output tube 73, with the soup of recycle pump 27 from reaction tank 24 extractions, through recycle pump suction and rising pipe 75 send into that air purifier 23 internal sprayings mix and chemical combination after enter reaction tank 24 again and carry out secondary impact water bath chemical combination after, with objectionable impurities chemical combination is that precipitable thing is stayed in the reaction solution, and uncontaminated air is sent into chimney 26 through induced draft fan 25 by induced draft fan air draught and exhaust duct 74 and discharged; 2. dispensing and liquid level control: establish dispensing kit 28 at reaction tank 24, its nowel is that spill box is collected unnecessary soup in the reaction tank, and case is full after reflux pump 29 is sent the molten medicine-chest reuse of the top box of dispensing kit 28 back to, installation tap water supply pipe 84 on top box; 3. spoil disposal: when accumulating the too many or liquid content of dispersion of mud in the reaction tank 24 very little the time, open mud valve 30 spoil disposals, institute's blowdown mud through reaction tank shore pipe 79 from flowing into sludge sump 50.
Sludge treatment, 1. preliminary sedimentation tank mud: preliminary sedimentation tank 3 sedimentary mud pick up and send into mud drainage slot 49 by spoil disposal purlin car 48 by inhaling mud purlin car suction mud and shore pipe 77, flow into sludge sump 50 certainly through shore pipe 80 again; 2. two heavy chamber mud: sedimentary mud is discharged from shore pipe 78 by two heavy chamber automatic mud removing valves 47 two heavy chambers 9), flows into sludge sump 50 certainly; 3. sludge drying is handled: the supernatant liquor in the sludge sump 50 is discharged from sludge sump upflow tube and water extracter water shoot 82 by automatically controlled reverse flow valve 54, send into balancing reservoir 1 and participate in processing again, mud promotes the back by sludge pump 51 and inhales in mud and the dredging tube 81 to add from PAM with PAM volume pump 37 at sludge pump and manage after 71 PAM that send here mix, send into centrifugal dewatering of sludge machine 52 and carry out drying and other treatment, dried mud is from 53 outputs of mud travelling belt, and waste water flows back to balancing reservoir 1 through sludge sump upflow tube and water extracter water shoot 82.
Administration system, 1. neutralizing agent: add pipe 70 by volume pump 35 through neutralizing agent from neutralizing agent case 34 at the used neutralizing agent of neutralization stage and send into line mixer 6, its dosage is by the PH on-line monitoring instrument control that is located at the mixing tank front and back; 2. two heavy chamber flocculation agents: by the nowel storage medicine-chest sucking-off of coagulating agent volume pump 40 from coagulant administration case 39, in coagulant dosage pipe 72 is delivered to and the rear portion aeration of solarization air cell 7 mix; 3. sludge treatment flocculation agent; By the nowel storage medicine-chest sucking-off of PAM volume pump 37 from PAM dispensing kit 36; Adding pipe 71 through PAM delivers to the sludge pumps of sludge pump 51 and inhales mud and mix with dredging tube 81.
Backwash water is handled, 1. filtration chamber's backwash water: filtration chamber 10 is reaching when filling perhaps head final period, and the flush discharge valve on filtration chamber's backwash rising pipe 60 enters backwash main discharge pipe 64 automatically, flows back to balancing reservoir 1 certainly; 2. active carbon adsorber backwash water: when needs wash, its backwash is sent into adsorber with clear water from the electric control valve of water storage tank on active carbon adsorber backwash water inlet pipe 62 of filtration chamber 10, and backwash waste enters backwash main discharge pipe 64 from active carbon adsorber backwash rising pipe 63.
Robot control system(RCS), 1. main line automatic control: liquid level sensor is installed in equalizing tank 4, top water-level and lowest water level instruction lift pump 5 are opened, are stopped in the control pond, control panel, valve and the time relay in all water technologies of lift pump 5 back is all chain with lift pump, and follow procedure moves with lift pump; 2. all establish liquid level sensor in accident pool, pond, sewage lagoon and the clean water basin, just instruct separately lift pump and the automatic start-stop of follow-up equipment by the pond median water level; 3. guard pump: when the water-quality guideline of the on-line monitoring instrument in being located at the monitoring pond was defective, instruction started operation, termination of pumping when qualified; 4. automatic chemical dosing case: PAM dispensing kit 36 and coagulant administration case 39 are divided into top box (molten medicine-chest) and nowel (storage medicine-chest), in nowel, establish liquid level sensor, instruction automatic infusion valve 38 or 41 is opened when nowel lacks medicine, the standby soup of top box is dropped into nowel automatically, and warning allows the operations staff come molten medicine; 5. mechanical grille: mechanical grille 19 is opened automatically, is stopped by water level height before the grid; 6. diving mixer: open automatically, stop by setting-up time; 7. each ECU and security system are all imported master control room and are controlled by the PLC system.
Claims (8)
1. an aeration flocculence is handled " calcium carbide acetylene method PVC production wastewater " treatment process, it is characterized in that: utilize neutralization, multistage aeration, precipitation, filter, the complete process for treating that charcoal absorption and purifying air combine with the physico-chemical processes of sludge treatment, by pretreatment stage, the second-stage treatment stage, the advanced treatment stage, security measures and reuse facility five parts are formed, 1. pretreatment stage: the PVC waste water that carbide slag field supernatant liquor and each production unit are sent here flows in the balancing reservoir (1) by sewage water inlet pipe (55), stir through diving mixer (42), after flowing into solarization air cell (2) aeration and removing the oxidable thing of ammonia nitrogen or catalysis hypochlorite oxidation, from flowing into the heavy suspended substance that goes of preliminary sedimentation tank (3), flow into equalizing tank (4), stir by diving mixer (43); 2. second-stage treatment stage: pretreated water is sent into line mixer (6) by lift pump suction and rising pipe (56) through lift pump (5) from equalizing tank (4), with volume pump (35) by neutralizing agent add neutralizing agent that pipe (70) sends here mix enter after the neutralization in and solarization air cell (7), the air of sending here by high pressure positive blower blast tube (76) with high pressure positive blower (31) stirs and oxidation, in and solarization air cell's back segment add pipe (72) dosing coagulant with coagulating agent volume pump (40) by coagulation, enter reaction chamber (8) then and carry out flocculation reaction, form the heavy suspended substance, clear water of going in flocs unit inflow two heavy chambers (9) and enter filtration chamber (10) filtration; 3. advanced treatment stage: water enters active carbon adsorber (11) by filtration chamber's rising pipe (57) and active carbon adsorber water inlet pipe (58) gravity flow after the filter of filtration chamber, and remaining material is fallen in absorption after active carbon adsorber rising pipe (61) flows into monitoring pond (12); 4. security measures: in the monitoring pond, establish COD on-line monitoring instrument, test water quality reaching standard time discharging or flow into clean water basin (13) reuse can not absorb water by the monitoring pump and rising pipe (83) is sent balancing reservoir (1) back to or accident pool (16) participates in processing again with monitoring pump (15) when up to standard; 5. reuse facility: qualified water is sent into user's reuse by the suction of reuse pump with rising pipe (65) through reuse pump (14).
2. aeration flocculence according to claim 1 is handled " calcium carbide acetylene method PVC production wastewater " treatment process, it is characterized in that: accident waste water is rainwater and fire-fighting wastewater treatment just: 1. accident waste water enters accident pool (16) storage by accident pool water inlet pipe (66), and, send into balancing reservoir (1) with accident pump (17) by suction of accident pump and rising pipe (67) and handle with diving mixer (45) stirring; 2. first rainwater and fire-fighting waste water: they flow through frame trough (18) from first rainwater and fire-water pond water inlet pipe (68), fall the bulk suspended substance by mechanical grille (19) interception, enter just rainwater and fire-water pond (20), send into balancing reservoir (1) with the equal permanent water yield by suction of rainwater pump and rising pipe (69) through rainwater pump (21) again and handle.
3. aeration flocculence according to claim 1 is handled " calcium carbide acetylene method PVC production wastewater " treatment process, it is characterized in that: aerating system: the air that aeration is used by high pressure positive blower (31) through high pressure positive blower blast tube (76) is sent into aeration tank (2) respectively in aerating system (32) and in and aerating system (33) implementation aeration in the solarization air cell (7).
4. aeration flocculence according to claim 1 is handled " calcium carbide acetylene method PVC production wastewater " treatment process, it is characterized in that: air-purification system, 1. purifying air: in and aeration in waste gas under the suction of induced draft fan (25), flow into air purifier (23) through gas skirt (22) and obnoxious flavour output tube (73), with the soup of recycle pump (27) from reaction tank (24) extraction, through recycle pump suction and rising pipe (75) send into that air purifier (23) internal spraying mixes and chemical combination after enter reaction tank (24) again and carry out secondary impact water bath chemical combination after, with objectionable impurities chemical combination is that precipitable thing is stayed in the reaction solution, and uncontaminated air is sent into chimney (26) through induced draft fan (25) by induced draft fan air draught and exhaust duct (74) and discharged; 2. dispensing and liquid level control: establish dispensing kit (28) at reaction tank (24), its nowel is that spill box is collected unnecessary soup in the reaction tank, and case is full after reflux pump (29) is sent the molten medicine-chest reuse of the top box of dispensing kit (28) back to; 3. spoil disposal: when accumulating the too many or liquid content of dispersion of mud in the reaction tank (24) very little the time, open mud valve (30) spoil disposal, institute's blowdown mud flows into sludge sump (50) certainly through reaction tank shore pipe (79).
5. aeration flocculence according to claim 1 is handled " calcium carbide acetylene method PVC production wastewater " treatment process, it is characterized in that: sludge treatment, 1. preliminary sedimentation tank mud: the sedimentary mud of preliminary sedimentation tank (3) by inhaling mud purlin car and inhale mud and shore pipe (77) picking up and send into mud drainage slot (49), flows into sludge sump (50) through shore pipe (80) by spoil disposal purlin car (48) more certainly; 2. two heavy chamber mud: sedimentary mud is discharged from shore pipe (78) by two heavy chamber automatic mud removing valves (47) in the two heavy chambers (9), flows into sludge sump (50) certainly; 3. sludge drying is handled: the supernatant liquor in the sludge sump (50) is discharged from sludge sump upflow tube and water extracter water shoot (82) by automatically controlled reverse flow valve (54), send into balancing reservoir (1) and participate in processing again, mud promotes the back by sludge pump (51) and inhales in mud and the dredging tube (81) with PAM volume pump (37) at sludge pump and add from PAM after PAM that pipe (71) sends here mixes, send into centrifugal dewatering of sludge machine (52) and carry out drying and other treatment, dried mud is from mud travelling belt (53) output, and waste water flows back to balancing reservoir (1) through sludge sump upflow tube and water extracter water shoot (82).
6. aeration flocculence according to claim 1 is handled " calcium carbide acetylene method PVC production wastewater " treatment process, it is characterized in that: administration system, 1. neutralizing agent: add pipe (70) by volume pump (35) through neutralizing agent from neutralizing agent case (34) at the used neutralizing agent of neutralization stage and send into line mixer (6), its dosage is by the PH on-line monitoring instrument control that is located at before and after the mixing tank; 2. two heavy chamber flocculation agents: by the nowel storage medicine-chest sucking-off of coagulating agent volume pump (40), in coagulant dosage pipe (72) is delivered to and the rear portion aeration mixing of solarization air cell (7) from coagulant administration case (39); 3. sludge treatment flocculation agent: by the nowel storage medicine-chest sucking-off of PAM volume pump (37) from PAM dispensing kit (36); Adding pipe (71) through PAM delivers to the sludge pump of sludge pump (51) and inhales mud and mix with dredging tube (81).
7. aeration flocculence according to claim 1 is handled " calcium carbide acetylene method PVC production wastewater " treatment process, it is characterized in that: backwash water is handled, 1. filtration chamber's backwash water: filtration chamber (10) are reaching when filling perhaps head final period, flush discharge valve on filtration chamber's backwash rising pipe (60) enters backwash main discharge pipe (64) automatically, flows back to balancing reservoir (1) certainly; 2. active carbon adsorber backwash water: when needs wash, its backwash is sent into adsorber with clear water from the electric control valve of water storage tank on active carbon adsorber backwash water inlet pipe (62) of filtration chamber (10), and backwash waste enters backwash main discharge pipe (64) from active carbon adsorber backwash rising pipe (63).
8. aeration flocculence according to claim 1 is handled " calcium carbide acetylene method PVC production wastewater " treatment process, it is characterized in that: robot control system(RCS), 1. main line automatic control: liquid level sensor is installed in equalizing tank (4), top water-level and lowest water level instruction lift pump (5) are opened, are stopped in the control pond, control panel, valve and the time relay in all water technologies of lift pump (5) back is all chain with lift pump, and follow procedure moves with lift pump; 2. all establish liquid level sensor in accident pool, stormwater tank, sewage lagoon and the clean water basin, just instruct separately lift pump and the automatic start-stop of follow-up equipment by the pond median water level; 3. guard pump: when the water-quality guideline of the on-line monitoring instrument in being located at the monitoring pond was defective, instruction started operation, termination of pumping when qualified; 4. automatic chemical dosing case: PAM dispensing kit (36) and coagulant administration case (39) are divided into top box (molten medicine-chest) and nowel (storage medicine-chest), in nowel, establish liquid level sensor, instruction automatic infusion valve (38) or (41) is opened when nowel lacks medicine, the standby soup of top box is dropped into nowel automatically, and warning allows the operations staff come molten medicine; 5. mechanical grille: mechanical grille (19) is opened automatically, is stopped by water level height before the grid; 6. diving mixer: open automatically, stop by setting-up time; 7. each ECU and security system are all imported master control room and are controlled by the PLC system.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102167462A (en) * | 2011-05-27 | 2011-08-31 | 新疆中泰化学（集团）股份有限公司 | Chemical oxygen demand (COD) sewage treatment method in production of polyvinyl chloride resin through calcium carbide acetylene method |
| CN101525264B (en) * | 2009-03-24 | 2012-11-14 | 内蒙古君正化工有限责任公司 | Method for recycling sodium hypochlorite purifying liquid used for purifying acetylene gas |
| CN102992519A (en) * | 2012-11-27 | 2013-03-27 | 常州大学 | Industrial sewage treatment device |
| CN103121741A (en) * | 2013-02-05 | 2013-05-29 | 西安建筑科技大学 | Treatment method of filter backwash wastewater |
| CN103508556A (en) * | 2013-10-28 | 2014-01-15 | 上海纯元环保科技有限公司 | Aeration capacity regulating system for aerobic sewage treatment |
| CN106967192A (en) * | 2017-03-31 | 2017-07-21 | 四川永祥股份有限公司 | The technique that a kind of calcium carbide produces PVC |
| CN116256477A (en) * | 2023-05-16 | 2023-06-13 | 中国科学院过程工程研究所 | Acetylene monitoring method in dry-method carbide slag sorting process |
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2007
- 2007-03-19 CN CNB2007100776972A patent/CN100509660C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525264B (en) * | 2009-03-24 | 2012-11-14 | 内蒙古君正化工有限责任公司 | Method for recycling sodium hypochlorite purifying liquid used for purifying acetylene gas |
| CN102167462A (en) * | 2011-05-27 | 2011-08-31 | 新疆中泰化学（集团）股份有限公司 | Chemical oxygen demand (COD) sewage treatment method in production of polyvinyl chloride resin through calcium carbide acetylene method |
| CN102992519A (en) * | 2012-11-27 | 2013-03-27 | 常州大学 | Industrial sewage treatment device |
| CN103121741A (en) * | 2013-02-05 | 2013-05-29 | 西安建筑科技大学 | Treatment method of filter backwash wastewater |
| CN103508556A (en) * | 2013-10-28 | 2014-01-15 | 上海纯元环保科技有限公司 | Aeration capacity regulating system for aerobic sewage treatment |
| CN106967192A (en) * | 2017-03-31 | 2017-07-21 | 四川永祥股份有限公司 | The technique that a kind of calcium carbide produces PVC |
| CN106967192B (en) * | 2017-03-31 | 2019-06-04 | 四川永祥股份有限公司 | A kind of technique of calcium carbide production PVC |
| CN116256477A (en) * | 2023-05-16 | 2023-06-13 | 中国科学院过程工程研究所 | Acetylene monitoring method in dry-method carbide slag sorting process |
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